Using his telescope Galileo was able to see that the moon had craters on it. Aristotle had said the moon was a perfect sphere. Galileo proved him wrong by discovering the craters. He also found mountains that were taller than the ones here on Earth. All his measurements were done using the shadows he saw.
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| Multiple craters on the moon |
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| Another shot of the moons craters |
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| A close up on a crater on the moon |